LT1085CM-3.3#PBF Linear Technology, LT1085CM-3.3#PBF Datasheet - Page 14

• Manufacturer Part Number: LT1085CM-3.3#PBF
• Description: IC LDO REG FIXED 3.3V 3A DDPAK-3
• Manufacturer: Linear Technology

Specifications of LT1085CM-3.3#PBF

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: Up to 25V
• Voltage - Dropout (typical): 1.3V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): 3.2A
• Operating Temperature: 0°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-2, D⊃2Pak (2 leads + Tab), TO-263AB
• Primary Input Voltage: 20V
• Output Voltage Fixed: 3.3V
• Dropout Voltage Vdo: 1.3V
• No. Of Pins: 3
• Output Current: 3A
• Operating Temperature Range: 0°C To +125°C
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Voltage Regulator Type: Linear
• Topology: LDO
• Regulator Output Type: Fixed
• Polarity Type: Positive
• Number Of Outputs: Single
• Input Voltage (min): 4.3V
• Input Voltage (max): 25V
• Output Voltage: 3.3V
• Package Type: DDPAK
• Power Dissipation: 30W
• Load Regulation: 0.1%
• Line Regulation: 0.015%
• Output Voltage Accuracy: ±1%
• Operating Temp Range: 0C to 150C
• Operating Temperature Classification: Commercial
• Dropout Voltage@current (max): 1.5@3A
• Dropout Voltage@current (typ): 1.3@3A
• Pin Count: 3 +Tab
• Mounting: Surface Mount
• Quiescent Current (max): 10mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LT1083/LT1084/LT1085
TYPICAL APPLICATION
14
RETURN
V
IN
+
10μF
IN
V
V
*C1 IMPROVES RIPPLE REJECTION.
IN
X
IN
C
LT1083
SHOULD BE < R1 AT RIPPLE FREQUENCY
ADJ
+
IN
IN
10μF
OUT
IN
LT1083
LT1083
ADJ
ADJ
Improving Ripple Rejection
LT1083
ADJ
121Ω
365Ω
Paralleling Regulators
OUT
OUT
25Ω
Remote Sensing
OUT
+
R1
120Ω
100μF
R1
121Ω
1%
R2
R2
365Ω
1%
(MAX DROP 300mV)
0.015Ω
6
+
*THE #18 WIRE ACTS
100pF
1
2 FEET #18 WIRE*
AS BALLAST RESISTANCE
INSURING CURRENT SHARING
BETWEEN BOTH DEVICES
R
V
P
IN
LM301A
7
C1
25μF*
8
V
I
OUT
OUT
+
–
+
4
= 0A TO 15A
= 1.25V 1 +
+
2
3
5μF
25Ω
150μF
LT1083/4/5 ADJ TA03
1083/4/5 ADJ TA04
V
5V
OUT
1k
( )
R2
R1
1083/4/5 ADJ TA07
R
L
RETURN
V
5V
OUT
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